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Replication Enchantment

by Luc1fer1o

Replication Enchantment is a NeoForge enchantment that lets a weapon make slain mobs drop their own spawn egg, with a rare chance per kill.

NeoForgeClient and serverAll rights reserved1.21.1

What it does

Replication Enchantment adds a single rare enchantment for weapons. When a mob is killed by a weapon carrying it, the mob can drop an egg that summons another of its kind. The enchantment has only one level, and it is weighted to appear rarely on enchanted gear.

The base chance of a drop is 2.5 percent, and it rises by 1 percent for each Looting level on the weapon, so Looting makes the roll slightly more likely to succeed. A successful roll adds exactly one spawn egg to the mob's drops, and a single kill never yields more than one. Boss mobs are excluded by default.

Entity IDs listed under the excludedMobs setting, which server owners can edit, determine which mobs cannot yield a spawn egg. Replication Enchantment is released under All rights reserved and is not open source. Files exist for NeoForge 1.21.1, and the latest file, 1.0.0, was published on 2026-07-03.

Key features

  1. Spawn egg drops

    Eligible mobs can drop a spawn egg for their own type when killed by an enchanted weapon.

  2. Rare single-level enchantment

    The enchantment has one level and is weighted so that it turns up infrequently on weapons.

  3. Looting bonus

    Each Looting level raises the drop chance by 1 percent on top of the 2.5 percent base.

  4. Boss exclusion by default

    Boss mobs do not produce spawn eggs unless the server config changes that.

  5. Configurable mob list

    The excludedMobs setting lets server owners block specific entity IDs from the drop.

Compatibility

Latest build for each game version and loader.

1.21.11.0.0
ReleaseBetaAlphaNot available

Only full game releases are shown. This mod publishes no snapshot builds.

Use cases

Collecting mob eggs

Players who want spawn eggs for mobs they have killed can gather them from enchanted weapon kills.

Server economy tuning

Server owners can keep certain mobs from yielding eggs by listing their entity IDs.

Who it’s for: Players who want a rare way to collect spawn eggs, and server owners who want to control which mobs can produce them, on NeoForge 1.21.1.

Questions

Does Replication Enchantment need to be installed on both sides?

Yes. Every player and the server need a copy of the mod.

Which loader does Replication Enchantment support?

It is published for NeoForge only, for Minecraft 1.21.1.

Can boss mobs drop spawn eggs?

Not by default. Boss mobs are excluded, and the excludedMobs setting controls which other entity IDs are blocked.

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What the author says

Replication Enchantment adds a single-level, very rare weapon enchantment for NeoForge. When a mob is killed with a weapon enchanted with Replication, that mob can drop its spawn egg using a rare chance model similar to wither skeleton skull drops. The drop chance starts at 2.5% and increases by 1% per Looting level…
Luc1fer1o, on the Modrinth page

Official listing

Owner
Luc1fer1o
Published
2026-07-02
Updated on Modrinth
2026-07-03
Facts verified
2026-10-15
Open on ModrinthCompare